Clinton is was speaking to gay and lesbian supporters in South Florida, where she's spent the day campaigning. She said Trump has a "terrible record on LGBT rights" and warned he would nominate Supreme Court justices who would overturn the legality of gay marriage.

Clinton urged supporters to show up to vote in big numbers, declaring, "Let's break every single record."

Meanwhile, Trump reiterated his call that the U.S. election system is rigged and corruption in government rampant at a rally in Las Vegas, Nevada, Sunday afternoon.

He also attacked Clinton again for the FBI investigation into her use of a private email server while she was Secretary of State.